2017 Yamaha YZ450FX

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This is not an offer for credit and should be used for estimation purposes only based on the information you provided. You should not base your decision on this estimate alone. Title, registration, tax and other fees, and personal circumstances such as employment status and personal credit history, were not considered in the calculations.

Designed for closed course X-Country and enduro-type racing the YZ450FX combines light, nimble handling with the power of a 450.

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Additional Features

GYTR® POWER TUNER READY: Accessory GYTR Power Tuner lets owners adjust air/fuel mixture and ignition timing maps to match engine performance characteristics to the rider and race conditions in a matter of seconds with the push of a few buttons.

REVISED SHOCK TUNING: The rear linkage and KYB® shock provides 11.6 inches of travel with adjusters for high- and low-speed compression damping, rebound and spring preload—and features a large piggyback reservoir for excellent damping and fade resistance.

INNOVATIVE ENGINE DESIGN: The position of the engine moves the rotational mass of the cams towards the center of the bike which allows for a straight shot, down-draft intake and straight exhaust port for ultimate performance. This also keeps the airbox up high, out of dust and mud/water.

ADVANCED FUEL INJECTION: The fuel injection system uses 3D mapped electronic control for the fuel and ignition timing that are optimized for cross-country racing, with a YZ450F-based 44mm throttle body.

WIDE RATIO GEARING: A five-speed wide-ratio transmission is used to insure the right gear is selected for a wide variety of terrain found in cross country racing, from tight single tracks to wide-open desert blasts.

FX-SPECIFIC CLUTCH SYSTEM: Based on the YZ450F, the clutch plate material, springs, push lever and oil valve are optimized for cross-country racing.

YZ-F-DERIVED COOLING SYSTEM: Large-capacity YZ450F radiators provide maximum cooling efficiency with great strength, and can be fitted with an accessory cooling fan for additional airflow at slower speeds.

New for 2017

REVISED SUSPENSION SYSTEMS: Both front and rear dampers feature optimized settings for 2017 to further boost overall suspension performance, while the front fork utilizes a stronger oil seal system for enhanced durability in the toughest conditions.

SIMPLIFIED SERVICING: Redesigned air cleaner cover provides tool-less access to the air filter, positioned at the front of the bike to avoid roost from the rear wheel.

UPDATED INDICATORS: Thanks to a new WR-style fuel level sensor in the tank, the 2017 YZ450FX includes convenient fuel level and engine warning indicators on the handlebar.

Top Features

INNOVATIVE HARE SCRAMBLE/GNCC® ENGINE DESIGN: The YZ450FX™ shares the revolutionary rearward-slanted-cylinder design of the YZ450F™ that allows for a straight downdraft intake with a symmetrical port layout. In the YZ450FX, this engine delivers a controllable, torquey power character with strong top-end power tuned specifically for cross-country racing.

BILATERAL BEAM ALUMINUM FRAME: A nearly identical bilateral beam frame that is found on the championship winning YZ450F is used on the YZ450FX. It places the engine, fuel tank and exhaust close to the center mass of the bike for extremely light and nimble handling character.